johnson



C.' H. JOHNSON.

' Gas Burner.

Patented June 20, 1865-.

. UNITED STATES PATENT OFFICE.

CHAS. H. JOHNSON, OF BOSTON, MASSACHUSETTS, ASSIGNOR TQ HIMSELF ANDEUGENE WOODMAN,1OF SAME PLACE.

ARGAND GAS-BURNER.v

Specification forming part of Letters Patent No. l 8,340, dated June 20,1865.

To all whom it may concern.-

Beit known that I, CHARLES H. JOHNSON, of Boston, of the county ofSuffolk and State of Massachusetts, have made a new and useful inventionhaving reference to Argand Gas- Burners; and Ido hereby declare the sameto he fully described in the following specification andrepresentedintheaccompanyingdrawings, of 'which- Figure l is a verticalsection of an Argand gas-burner containing my invention. Fig. 2 is a topview, and Fig. 3 a transverse section, of its annular tip. Fig. 4 is atop view of the annular foraminous partition placed within the burner,or in the tip-receiving chamber thereof.

The burner exhibited by Fig. l in the drawings has all the propertiesot' the ordinary Argand-burner, with one or more improvements heretoforepatented by me. As such improvements form no part of my presentinvention, it will be unnecessary to herein further allude to them.

In 'such burner, a denotes the tip chamber or recess for receiving andholding the tire-resisting annular tip b, which I usually construct ofsteatite,but which may be made of any other suitable heat-withstandingmaterial or composition. Vertical channels for leading the gas from theinduction-chamber d into the tipchamber a are shown at c c.

In carrying out my invention I place within the tip chamber a, and so asto extend across it, an annular and foraminous partition, e, the objectof it being to equally distribute the gas throughout the chamber inmanner to cause it to be equably delivered to the various jet-holes ofthe tip b, whereby the :dame may be prevented from spearing,77 or bemaintained at an equal height around its upper edge. I also form theannular tip b concave on 'its upper surface, or concave both on itsupper and its lower surfaces; or, in other words, with a groove orchannel extending entirely around each of the said surfaces, as shown atf and g in Figs. 2 and 3; and I countersink each of the tip jetholes atits opposite ends, or particularly at its lower end, the same being asshown in such figures, in which rzexhibit the said jet-holes of the tip.

Byconstructing the tip b with the groovej at its upper surface or endthe currents of gas escaping from the various jet-holes have a betteropportunity of uniting before coming in contact with the dame than theydo when the top surface of the tip is fiat. Furthermore, b vcountersinking each jet-hole at its upper end the gas is enabled to'spread therefrom into the groove to better advantage than it otherwisewould. Again, by countersinking the jethole at its lower end the gasWill not only pass into and through the jet-hole in greater volume, butWithout noise, or singing, as it is termed.

l The groove g aids in directing the gas into the various jet-holes,and, while serving to lessen the length of each hole, enables the tip tobe made with a suflicientdepth to properly eX- tend into thetip-chamber.

What I claim as my invention in the Argand gas-burner is as follows:

1. The arrangement and combination ofthe foramiuous partition c with thetip b, its chamber a, and the conduits leading into and out ot' `suchchamber.

2. The combination of the tip b with the groove f in its upper surfaceor end, or with the said groovef in its upper surface or end, and alsowith another groove, g, arranged in its lower surface or end.

3. The tip as made with each ofits jet-holes countersunk at either orboth of its ext-remities, and for the purpose specitied.

4. The tip as made with a groove,f, in its upper surface orend and witheach ot' its jetholes countersunk at its upper end.

5. The tip as made with a groove,f, in its upper surface or end and witheach ot' its jetholes countersunk at both ot' its extremities.

` c. H. JoHNsoN.

Witnesses:

R. H. EDDY, F. P. HALE, Jr,

